Rotary-valve internal-combustion engine.



W. C. H. SCOTT & W. ROBINS. ROTARY VALVE INTERNAL COMBUSTION ENGINE.APPUcATxoN FILED MAR. 15; 191e.

Lf. Paten-md m1151918.

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ENGLAID.

incassa.,

Speeication o Letters atent.

To all wzom 2'15 may concern:

e it known that We, lliLLLxM Cirannne HORACE Sco'r'r and VILLIAM Rooms,both subjects of the King of Great Britain, and

' road, Battersea,

London, England, and 4l Dartford road,

VDartford Kent llnelanil ene'inccrs rcsicc- 7 a :n 7 a: i tively, haveinvented new and useful .lnr'

provcmonts in and Relating t'o llotarj.1- Valve lnternal-CombustionEngines, of `which the following'is a specification.

rThis invention relates to in'iprovenients in that type of internalcombustion engine in which is employed a rotary distributing valvehaving. successive port spaces or cavities cut therei rlhe mainfobjectof the present invention is to provide an engine. ot' the above type soadapted as to counteract `anyv harmful action due to the. high pressuresand teinperatures .obtaining in the engine cylinders. Tov eliect this aAsection is inserted' into the rotary valve cylinder in such a positionas to `close lthe port during compression anal tiring strokes. Thissection 1s so constructed' that pressure 'on the portionexposeii to lilii te

the port area` tendsl to close the outer edges against the Walls of theValve cylinder con tainer.` y

Further in conjunction with tlaxe alcove feature vof Athe invention weemploy spring rings,-which do not rotate but remain sta.n tionary on thevalve cylincler container' Wall, and provide against leakage between thee1-r haast and inductionA ports or cavities in the rotary-valve'. lfl/'ealso make the exhaust passages in the rotary valve cylinder in a Way toinsure uniform heating and expan' sion of the metal, thereby enablingthe interior of theY rotary valve to be usecl as a Vaporizer.

vW e have illustrated our invention'in the accom.panyingn ,drawing whichshows it applied to a four cylinder engine although it is alsoapplicable to engines having other numbers ot' cylinders. i `v Figure lis a plan View, the valve eylintler loeing in section and the in exposedto View.v l

Fig'. 2 is a sectional gine cylinder showing the position ol arotary'valve When the piston is one quarter Way `down on the induction stroke,the induction port being?,` 'har-ely .l open.

Fig. 3 is a View of the saine eleyation of an ention, let 'into'therotary i valve cylinc'ler I is a lulorieatingw oil or rota-ted ny:ineens o' 4 thought nel ary t( rotary lvalve therecylinder when i thepiston is the bottoni of the induction stroke and just about to aprt. ithe compression strolren rBhe induction has just closeth n Fig. il showsthe position of the "valve on when the explosion taires place. The lsealing section in the rotary valve is een trai with the port. 7

lllg. 5 is a View showingthe position oit the rotary valve when thepiston is one .quarter oi the way up on the eifliaast stroke9 theexhaust outlet havingn just reached the full open position. V

l are the cylinders of the engine; the pistons; 3 theports.connectingjhe int ior ot' the cylinders with the rotary vali/'ecylin der Lin; l is the rotary valve distributor ivithin the cylinderLia; 5 is the .spring sei,- xal Ve fl, and orniing a self sealing jointwith thc'wall et the Valve cylincler 1l when. pressure Vis exerted onthe center; 6 is a conduit in the valifel between the port 3 and. thevaporizin'g chamber; is'the xfaporizing chamber. torinesi luy' hollowcenter of the rotary 'valve pliecl with fuel through the induction L 8;9 is the erl'iaust conduit formed on surface oil the valve Ll, theburnt" along: the conduits 9 under thas@ ll by undercut passages, commonwith the exhaust outlet lil. is tir" tion pipe through which fuel issupply .the engine. is liner conta Ll" anc? having' in positions portsigor. sa@ and the exhaust co incler er anal the lllt wiliviiecloseadjacent to rctluceo valve which are .f 'l cess to the chamber Fuel isdraw' into the nortions cha cxhaustconrlugts 6 anr'La proper turnopposite the o tion which serves to close the poi ing; anfl aiter theexplosion consists o curi'cil plate -lct into the circumference t therotary va in sach `way that the ci trai portion behind; an ein ity' andthe edaes an inclined bearing against its seat. nder the force of theexploslon, which takes place when the section 1s opposite the port (as1n Fig.

V14C), the plate slightly flattens and expands its edges against theinterior of the liner ll so as to spread and make a tight joint. Therings l1 which are lihe piston rings are situated in annular grooves inthe valve and serve to separate each portion thereof troni its neighbor.The passage 5). formed in the metal of the valve to lead the products ofcombustion from the cylinders to the exhaustfports lO extend sidewiseheneath the rings ll as appears from the right hand end of Fig. l. l5are pins t'or retaining the sections 5 in position when the valve iswithdrawn for cleaning or other purposes. rlhe spring rings can hepulled out` with the valve and reinserted through one end of the liner.Normally however they rest stat ionary within the latter while the valverotates.

yWhat we claim and desire to secure by Letters Patent of the l'nitedStates is :n

1. In combination. a valve cylinder and a valve therein. the said valvebeing provided with a spring section consisting ot' a curved platehaving a reduced central portion with inclined edges, the said sectionheing adapted under external pressure to flatten and spread its edgesagainst the cylinder wall to forni a tight joint.

2. A. rotary valve for internal combustion engines comprising a hollovv`chamber acting as a passage and vaporlzer tor the fuel, a conduitleading therefrom and adapted to ineet the cylinder port at. the time ofinductioin a surface conduit in the valve adapted to nieet the cylinderport at the time ot' exhaust and a spring section in the valve adaptedto spread thereby closing more tightly the cylinder port during andafter explosion.

A rotary valve 'for internal combustion engines comprising a hollowchamber acting as a passage and vaporizer for the fuel, a plurality olconduits leading therefrom and adapted to meet in turn the ports of acorresponding nuinher ot' cylinders at the time of induction, surfaceconduits in the valve adapted to ineet the cylinder ports at the time ofexhaust, spring sections in the valve adapted to spread thereby closingmore tightly the cylinder ports during and after explosion and pistonrings separating each portion of the rotary valve from the neighhoringportion. l

lin testimony whereotl we have signed our nainesto this specification inthe presence ot two suhscrihing witnesses.

'WlLLlAgll CHARLES HORACE SCOTT. WILLIAM RBINS. lv'itncsses:

Ammin S. Bisnor, llnxnv J. lV. ELLIS.

